<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>
<script>
    var arr = [{label:'男',value: 1}, {label:'女',value: 0}]
 
 function f(arr) {
   // 写代码，得到
   return arr.reduce((obj, item) => {
    obj[item.value] = item.label
    return obj
  }, {})
}
 var obj = f(arr);
 console.log(obj)
 // obj = {'1': '男'， '0': '女'}

//  let arr = [{label: '男', value: 0},{label: '女', value: 1}]
 
//  function arrToObj(arr){
//      let obj = {}
//      arr.forEach(item => {
//          obj[item.value] = item.label
//      })
//      return obj
//  }
  
//  const obj1 = arrToObj(arr)
//  console.log('数组forEach方法', obj1)

</script>

</html>